Antifriction bearing mounting



Jan. 27, 1948. R. M. BEATTY Y ,4

ANTIFRICTION' BEARING MOUNTING Filed Oct. 18, 1946 INVENTOR flea. m fl-mzg,

AT TORNEYv Patented Jan. 27, 1948 UNITED STATES PATENT. OFFICE I 2,4s 5,cs7 ANTIFRICTION BEARING MOUNTING Rolla M. Beatty, Pittsburgh, Pa.

Application October 18, 1946, Serial No. 704,224

2 Claims. (Cl. 308-236) This invention relates to new and useful improvements in mounting antifriction bearings, and it is among the objects thereof to provide mean for mounting antifriction bearings to prevent creeping of the bearing races.

It is a further object of the invention toprovide means for mounting antifriction members by locking the outer bearing race in permanent and fixed position in the bearing housing.

These and further objects of the invention will become more apparent from a consideration of the accompanying drawing, constituting a part hereof, in which like reference characters designate like parts, and in which Fig. l is a vertical-cross-sectional view, partially in elevation, of a bearing member embodying the principles of this invention;

Fig. 2 a similar view of a modified form of bearing structure;

Figs. 3, 4 and 5 plan views of locking discs embodying the principles of this invention;

Figs, 6, 7 and 8 cross-sectional views, taken, respectively, on the line 6-6 Fig, 3, 7-1! Fig. 4, and t-t, Fig.5: and

Figs. 9 and 10 a side and front elevational view, respectively, of an antifriction bearing member.

With reference to the several figures of the drawing, the numeral I designates a bearing housing of a motor or transmission, as the case may be, 2 a similar housing having an end wall 3. Shafts l are adapted to be journaled in the bear ing housings by antifriction members constituting an inner race 6 andan outer race 6 with antifriction ball bearings i disposed therebetween. As is conventional practice, the inner race 5 is mounted on or near the end of the shaft or against a shoulder a of the shaft by a press fit, the inner race turning with the shaft t as it rotates. The outer race t is usually pressed into the cylindrical wall 9 of the bearing housing and is entirel dependent upon its press fit against rotation. Due to the vibration of the machine in which the antifriction bearings are mounted, the outer race usually becomes loose and begins rotating with the shaft t, which results in pitting and destruction of the outer surface of the outer race member with increased vibration and ultimate destruction of the bearing housing itself.

In accordance with the present invention the outer bearing race 6 is locked against rotation irrespective of a loose or tight fit in the wall of r the bearing housing so that the life of the bearing is greatly increased. This is accomplished by ueens of the locking rings, shown in Figs. 3 to 8 of the drawings, which are constructed as follows.

The outer bearing race 6 is provided with radial slots m, Figs. 9 and 10, which are adapted to recelve-lugs or ears ll of the locking ring it. It is to be noted that the ring H has oppositely disposed ears or lugs II or Ha which not only interact with slots of the outer race, but on the 0pposite face of the ring I 2 interact with slots 83 of locking rings it that are provided with perforations lb. Another locking ring it, Fig. 5, is provided with perforations or openings if that correspond in number and spacing to the openings id of the lock ring it. Also the lock ring it is provided with radial drill holes or tap holes it for receiving screws 09, as shown in Fig. 1.

The parts are assembled as follows. The inner race 5 of the bearing having been pressed on the end of the shaft 3 and the outer race and antifriction ball bearing members being in a unit assemb'y with the inner race 5, the shaft is placed in the bearing housing I or 2, as shown in Figs. 1 or 2 of the drawing. The locking ring it is then assembled with the lugs Ii inserted in slots it of the outer race 6. The intermediate lock ring H3 is then mounted adjacent the face of lock ring I2 with the lugs Ha disposed in slot l3 thereof, and the outer lock ring is is then placed against the face of ring M, as shown in Fig, 1, and screws 20 are inserted through openings ii and it, the latter being a tap hole, to hold the members it and it together. Screws l9 are then In the form of the device shown in Fig. 2, the

end lock ring it may be omitted and the lock rings l2 and it alone are used because the end wall 3 of the bearing housing serves as the anchor for preventing rotation of the locking means, taking the place of theend ring it. Otherwise the lock ring i2 interacts through the lugs H with the slots it of the outer bearing race and through lugs Ila with the slots 83 of the intermediate race It. The latter is locked with the end wall 3 of the bearing housing by the tap screws 20 which interact with lag ll of the member It.

the threaded openroller and ball type of antitriction hearings in which the bearing members are interposed between an inner and outer race. b

Although one embodiment of the invention has been herein illustrated and described, it will be evident to those skilled in the art that various modifications may be made in the details of construction without departing from the principles herein set forth,

I claim:

1. An antiiriction bearing-structure comprising an inner race mounted for rotation with a shaft,

' an outer race and antifricticn bearings disposed between the inner and outer races, said outer race 'havingradial slots on one face thereof, a lock ring having ears or lugs disposed on opposite faces thereof for interacting with the slots of said outer race. and a second lock ring having slots for engaging the oppositely disposed lugs 01 said first named lock ring, and means for anchoring said second named lock ring to the bearing housing.

2. In an antifriction bearing for high speed revolving shafts, an inner race mounted for rotation with said shaft, an outer race, and antiiriction members disposed between said races, said outer race being disposed in a bearing housing, a. plurality of lock rings for locking said outer race in said housing, said outer race having radial slots, one of said lock rings having similar slots, and an intermediate lock ring having oppositely disposed lugs for interacting with the slots of the outer race and slotted lock ring, and a third lock ring having fastening means connected with the 20 ring against rotation in said bearing housing.

ROLLA M. BEA'I'I'Y. 

